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Discussion Starter · #1 ·
I read that a Seiko model number, such SBDC001, is only partial and ends in either J1, K1, P1, J2, K2 or P2; apparently indicating where the watch was made (J1 - Japan).

Question to all: does this matter to watch quality? If I buy a Blue Sumo from an online Japanese JDM supplier, will I be getting a J1?

Thanks
 

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^^^this.


Also, model numbers seem to get lost in time, and then you end up with case/movement numbers which are the only thing engraved on the watch.

Either way, the Sumo is JDM only so you need not worry.
 
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